HS code-based sourcing opportunities

List of the table of contents of this article:

• 1,HS code-based sourcing opportunities What to do if the amplifier of the car audio system is broken
• 2, How about the effect of car plus amplifier
• 3, How to check the car amplifier?
• 4, Some tips for choosing a car audio amplifier
• 5, What is the fault of the car amplifier?

What to do if the amplifier of the car audio system is broken

In short, when the combination audio amplifier is broken, some common problems can be solved by checking the power cord and fuse. If these methods can't be repaired, it's better to hand over the amplifier to professional maintenance personnel. Before repairing, make sure to disconnect the power supply and ensure your own safety.

If it is a power supply problem, you can check whether the fuse is burned out or the power cord is damaged for repair or replacement.If it is an audio connection problem, you can check whether the cable is loose or damaged, and reinsert or replace the cable. If there is a sound quality problem, you may need to adjust the equalizer settings of the amplifier or replace the damaged speaker.

The following is the car audio maintenance method sorted out for you by the editor of Understanding Vision. I hope it can help you. The method of car audio maintenance is to budget the DC operating voltage. The highest DC operating voltage in the cassette recorder can be budgeted according to the number of battery sections used in the machine. If 4 No. 5 batteries are selected, the operating voltage is 4×5V=6V.

Deafening music can drive away fatigue. However, car audio is most afraid of this sudden change in amplitude. When using the sound system, you must avoid turning the volume to the maximum, which is easy to damage the speaker coil and affect the amplifier.If the amplitude increases suddenly, the power amplifier may burn out. Therefore, in addition to avoiding sudden amplitude changes.

Question 5: It's not good. My amplifier is broken and there is no place to repair it. The amplifier is broken. Repair method: Lower the power supply voltage of the amplifier part. For example, if the voltage of the amplifier part is 45V positive and negative, use positive and negative 20V voltage for maintenance, which is safer. When repairing the amplifier circuit, you must short-circuit the amplifier signal input to the ground.

How is the effect of the car plus amplifier

1. The sound quality does not necessarily improve after installing the amplifier, because the sound quality effect of the sound system is not only a problem of the amplifier, but also the result of the operation of the whole system. To improve the sound quality, you need to know where the shortcomings of the system are. For example, if the power of the original amplifier is lower and the power of the installed amplifier is higher, the effect will be improved.

2. The size of the amplifier is reflected in your requirements for sound quality. If you have high requirements for sound quality, the amplifier is very necessary. I don't know much about car audio. Let's talk about what I understand.

3. Installing a dsp amplifier on the car can improve the sound effect. The difference between installing dsp and not installing DSP: The biggest difference between installing DSP and not installing DSP is that after installing DSP, the amplifier can be fine-tuned directly through the computer, which will be of great help in tuning the sound quality.

4. Yes, both of my cars have dsp amplifiers, and the improvement is obvious. Generally, due to the cost of the original factory's supporting car stereo, the low-board audio system cannot achieve the ideal effect.

How to check the car amplifier?

1. In order to see clearly, you can press the Pause/Break key to stop the screen and press the Enter key to continue.

2. According to the relevant information of Master Wan: the method of checking the power of the car Dana amplifier: first look at the insurance size of the amplifier. If there are several, multiply by 12v, and then multiply by two-thirds, which is the maximum power value. To measure the waveform of the amplifier with an oscilloscope, it must be the maximum distortion-free, which is the working power.

3. Check whether the silent circuit is in operation, and disconnect the silent circuit if necessary. Check the amplifier IC and its peripheral components. Check whether the car audio output cable has fallen off. It's better to go to a professional car audio repair shop for a comprehensive inspection.

4. Check whether the connection between the power supply and the ground wire is stable.Connect the audio signal source. Adjust the volume of the audio signal source to a moderate level and set the tone to neutral. Choose a music track with a wide frequency range and play it.

5. First, check whether the fuse is burned out. After disassembling the amplifier, check where there is any abnormality, such as whether there is a burnt element. Usually, the amplifier burns out the field effect tube and the power tube. This kind of failure is the most common. First, check these two places.

A few tips for choosing a car audio amplifier

[Pacific Automobile Network] When buying an audio system, you should follow the principle of high-power output. The greater the output power of the amplifiers, the stronger their ability to drive the speakers.

The same is true for amplifiers. When checking the indicator of amplifier power, you should pay attention to the following three points: First, battery voltage. The voltage of the car battery changes frequently. For the two commonly used signs: 14V/100W and 12V/100W amplifiers are two completely different power instructions.

The brand characteristics of audio should be understood, the differences, advantages and disadvantages of each audio, the recognition position, and the different playback of the audioThe sound quality is also different, and the design industry is different. For example, Sony's style is very fashionable, and it is very successful in the application of high technology.

Power matching, when matching power, many people think that the power of the car amplifier cannot be more powerful than that of the car speaker. Otherwise, when matching equipment, it is used to the power of the car audio speaker is larger than that of the amplifier.

First of all, the power of the amplifier should be matched with the power of the speaker; secondly, the amplifier with a built-in frequency divider should be selected, which will make the system expandible and the amplifier and speaker can be freely combined. At the same time, the adjustment is simple and easy to improve the sound quality of the whole system.

A good amplifier has low fan noise after power-on, no transformer vibration sound, and no other abnormal sounds. On the contrary, the amplifier is a bad product.Listen and play the sound. There is a good amplifier. The sound made by the stereo is strong and powerful, full of dynamics, the rhythm is clean and neat, the sound quality is clean and natural, and the layers are clear, and the sound is soft.

What is the fault of the car amplifier?

1. [Pacific Automobile Network] First, operation problems, such as turning off the volume, etc., second, there is a problem with the disc, or the video file on the disc, its audio encoding method is not supported by the car DVD, and third, there is a problem with the car DVD player.

2. Common troubleshooting methods of car audio false faults refer to abnormal situations caused by incorrect operation or the movement of a switch and button. At this time, there is no fault in the stereo itself, but a problem in the process of use. The user mistakenly thought it was a machine failure.

3. The most common fault of the amplifier is that the capacitor is broken or the amplifier tube is burned, which has problems in use, but most of the equipment itself is unstable. In addition, some amplifiers will have a fault that there is no sound in a channel. The problem is still the circuit problem inside.

4. We are modifying the car audio system. When the complete system is completed, the amplifier will sometimes be protected, and the amplifier will be burned. There are mainly the following problems that lead to the amplifier overheating protection x0dx0a. The installation position of the amplifier is poorly ventilated, resulting in poor heat dissipation, resulting in heat accumulation, causing the amplifier to overheat.

5. Mechanical failure is a relatively common fault in car audio, accounting for about 60% of the total maintenance volume. The mechanical faults of car audio are prominently manifested in: tone change, twisting, and non-banding. The damage includes the broken belt and the gear grinding.

6. Due to the use environment, it is generally difficult for car audio to achieve the effect of home audio of the same grade. In the process of use, it is also more likely to have some faults than home audio. The following are some common car audio faults and troubleshooting methods.